<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<title>Source code</title>
<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
</head>
<body>
<div class="sourceContainer">
<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2013 Zhenya Leonov<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package com.palamida.util.io;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import static com.google.common.base.Preconditions.checkArgument;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import static com.google.common.base.Preconditions.checkNotNull;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.awt.Desktop;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.io.File;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.io.PrintStream;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.nio.charset.Charset;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>/**<a name="line.29"></a>
<span class="sourceLineNo">030</span> * Static utility methods useful for working with system-dependent tasks.<a name="line.30"></a>
<span class="sourceLineNo">031</span> * <a name="line.31"></a>
<span class="sourceLineNo">032</span> * @author Zhenya Leonov<a name="line.32"></a>
<span class="sourceLineNo">033</span> */<a name="line.33"></a>
<span class="sourceLineNo">034</span>final public class Systems {<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
<span class="sourceLineNo">036</span>        private Systems() {<a name="line.36"></a>
<span class="sourceLineNo">037</span>        }<a name="line.37"></a>
<span class="sourceLineNo">038</span><a name="line.38"></a>
<span class="sourceLineNo">039</span>        /**<a name="line.39"></a>
<span class="sourceLineNo">040</span>         * Starts a new system-dependent process.<a name="line.40"></a>
<span class="sourceLineNo">041</span>         * <a name="line.41"></a>
<span class="sourceLineNo">042</span>         * @param command<a name="line.42"></a>
<span class="sourceLineNo">043</span>         *            the list containing the program and its arguments<a name="line.43"></a>
<span class="sourceLineNo">044</span>         * @return the {@code Process} object representing the started process<a name="line.44"></a>
<span class="sourceLineNo">045</span>         * @throws IOException<a name="line.45"></a>
<span class="sourceLineNo">046</span>         *             if an error occurs while starting the process<a name="line.46"></a>
<span class="sourceLineNo">047</span>         */<a name="line.47"></a>
<span class="sourceLineNo">048</span>        public static Process start(final List&lt;String&gt; command) throws IOException {<a name="line.48"></a>
<span class="sourceLineNo">049</span>                checkNotNull(command);<a name="line.49"></a>
<span class="sourceLineNo">050</span>                checkArgument(!command.isEmpty());<a name="line.50"></a>
<span class="sourceLineNo">051</span>                final ProcessBuilder builder = new ProcessBuilder(command);<a name="line.51"></a>
<span class="sourceLineNo">052</span>                return builder.start();<a name="line.52"></a>
<span class="sourceLineNo">053</span>        }<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>        /**<a name="line.55"></a>
<span class="sourceLineNo">056</span>         * Starts a new system-dependent process and waits for it to finish before<a name="line.56"></a>
<span class="sourceLineNo">057</span>         * returning.<a name="line.57"></a>
<span class="sourceLineNo">058</span>         * <a name="line.58"></a>
<span class="sourceLineNo">059</span>         * @param command<a name="line.59"></a>
<span class="sourceLineNo">060</span>         *            the list containing the program and its arguments<a name="line.60"></a>
<span class="sourceLineNo">061</span>         * @return the {@code Process} object representing the started process<a name="line.61"></a>
<span class="sourceLineNo">062</span>         * @throws InterruptedException<a name="line.62"></a>
<span class="sourceLineNo">063</span>         *             if the current thread is {@link Thread#interrupt()<a name="line.63"></a>
<span class="sourceLineNo">064</span>         *             interrupted} by another thread while it is waiting, then the<a name="line.64"></a>
<span class="sourceLineNo">065</span>         *             wait is ended and an {@link InterruptedException} is thrown<a name="line.65"></a>
<span class="sourceLineNo">066</span>         * @throws IOException<a name="line.66"></a>
<span class="sourceLineNo">067</span>         *             if an error occurs while starting the process<a name="line.67"></a>
<span class="sourceLineNo">068</span>         */<a name="line.68"></a>
<span class="sourceLineNo">069</span>        public static Process startAndWait(final List&lt;String&gt; command) throws InterruptedException, IOException {<a name="line.69"></a>
<span class="sourceLineNo">070</span>                checkNotNull(command);<a name="line.70"></a>
<span class="sourceLineNo">071</span>                checkArgument(!command.isEmpty());<a name="line.71"></a>
<span class="sourceLineNo">072</span>                final Process process = start(command);<a name="line.72"></a>
<span class="sourceLineNo">073</span>                process.waitFor();<a name="line.73"></a>
<span class="sourceLineNo">074</span>                return process;<a name="line.74"></a>
<span class="sourceLineNo">075</span>        }<a name="line.75"></a>
<span class="sourceLineNo">076</span><a name="line.76"></a>
<span class="sourceLineNo">077</span>        /**<a name="line.77"></a>
<span class="sourceLineNo">078</span>         * Launches the system associated editor application and opens the specified<a name="line.78"></a>
<span class="sourceLineNo">079</span>         * file for editing.<a name="line.79"></a>
<span class="sourceLineNo">080</span>         * <a name="line.80"></a>
<span class="sourceLineNo">081</span>         * @param file<a name="line.81"></a>
<span class="sourceLineNo">082</span>         *            the file to edit<a name="line.82"></a>
<span class="sourceLineNo">083</span>         * @throws IOException<a name="line.83"></a>
<span class="sourceLineNo">084</span>         *             if an I/O error occurs<a name="line.84"></a>
<span class="sourceLineNo">085</span>         * @return the specified file<a name="line.85"></a>
<span class="sourceLineNo">086</span>         */<a name="line.86"></a>
<span class="sourceLineNo">087</span>        public static File edit(final File file) throws IOException {<a name="line.87"></a>
<span class="sourceLineNo">088</span>                checkNotNull(file);<a name="line.88"></a>
<span class="sourceLineNo">089</span>                checkArgument(file.exists());<a name="line.89"></a>
<span class="sourceLineNo">090</span>                checkArgument(file.isFile());<a name="line.90"></a>
<span class="sourceLineNo">091</span>                Desktop.getDesktop().edit(file);<a name="line.91"></a>
<span class="sourceLineNo">092</span>                return file;<a name="line.92"></a>
<span class="sourceLineNo">093</span>        }<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span>        /**<a name="line.95"></a>
<span class="sourceLineNo">096</span>         * Opens the specified file with the system associated application.<a name="line.96"></a>
<span class="sourceLineNo">097</span>         * <a name="line.97"></a>
<span class="sourceLineNo">098</span>         * @param file<a name="line.98"></a>
<span class="sourceLineNo">099</span>         *            the file or directory to open<a name="line.99"></a>
<span class="sourceLineNo">100</span>         * @throws IOException<a name="line.100"></a>
<span class="sourceLineNo">101</span>         *             if an I/O error occurs<a name="line.101"></a>
<span class="sourceLineNo">102</span>         * @return the specified file<a name="line.102"></a>
<span class="sourceLineNo">103</span>         */<a name="line.103"></a>
<span class="sourceLineNo">104</span>        public static File open(final File file) throws IOException {<a name="line.104"></a>
<span class="sourceLineNo">105</span>                checkNotNull(file);<a name="line.105"></a>
<span class="sourceLineNo">106</span>                checkArgument(file.exists());<a name="line.106"></a>
<span class="sourceLineNo">107</span>                Desktop.getDesktop().open(file);<a name="line.107"></a>
<span class="sourceLineNo">108</span>                return file;<a name="line.108"></a>
<span class="sourceLineNo">109</span>        }<a name="line.109"></a>
<span class="sourceLineNo">110</span><a name="line.110"></a>
<span class="sourceLineNo">111</span>        /**<a name="line.111"></a>
<span class="sourceLineNo">112</span>         * Reassigns the "standard" output stream to the given file, using the<a name="line.112"></a>
<span class="sourceLineNo">113</span>         * specified charset.<a name="line.113"></a>
<span class="sourceLineNo">114</span>         * <a name="line.114"></a>
<span class="sourceLineNo">115</span>         * @param path<a name="line.115"></a>
<span class="sourceLineNo">116</span>         *            the specified file<a name="line.116"></a>
<span class="sourceLineNo">117</span>         * @param charset<a name="line.117"></a>
<span class="sourceLineNo">118</span>         *            the character set to use when writing the lines<a name="line.118"></a>
<span class="sourceLineNo">119</span>         * @param autoFlush<a name="line.119"></a>
<span class="sourceLineNo">120</span>         *            if {@code true}, the output buffer will be flushed whenever a<a name="line.120"></a>
<span class="sourceLineNo">121</span>         *            byte array is written, one of the println methods is invoked,<a name="line.121"></a>
<span class="sourceLineNo">122</span>         *            or a newline character or byte ('\n') is written<a name="line.122"></a>
<span class="sourceLineNo">123</span>         * @throws IOException<a name="line.123"></a>
<span class="sourceLineNo">124</span>         *             if an I/O error occurs<a name="line.124"></a>
<span class="sourceLineNo">125</span>         */<a name="line.125"></a>
<span class="sourceLineNo">126</span>        public static void setOut(final File path, final Charset charset, final boolean autoFlush) throws IOException {<a name="line.126"></a>
<span class="sourceLineNo">127</span>                checkNotNull(path);<a name="line.127"></a>
<span class="sourceLineNo">128</span>                checkNotNull(charset);<a name="line.128"></a>
<span class="sourceLineNo">129</span>                final PrintStream ps = MoreFiles.newPrintStream(path, charset, false, true);<a name="line.129"></a>
<span class="sourceLineNo">130</span>                System.setOut(ps);<a name="line.130"></a>
<span class="sourceLineNo">131</span>        }<a name="line.131"></a>
<span class="sourceLineNo">132</span><a name="line.132"></a>
<span class="sourceLineNo">133</span>        /**<a name="line.133"></a>
<span class="sourceLineNo">134</span>         * Reassigns the "standard" error stream to the given file, using the<a name="line.134"></a>
<span class="sourceLineNo">135</span>         * specified charset.<a name="line.135"></a>
<span class="sourceLineNo">136</span>         * <a name="line.136"></a>
<span class="sourceLineNo">137</span>         * @param path<a name="line.137"></a>
<span class="sourceLineNo">138</span>         *            the specified file<a name="line.138"></a>
<span class="sourceLineNo">139</span>         * @param charset<a name="line.139"></a>
<span class="sourceLineNo">140</span>         *            the character set to use when writing the lines<a name="line.140"></a>
<span class="sourceLineNo">141</span>         * @param autoFlush<a name="line.141"></a>
<span class="sourceLineNo">142</span>         *            if {@code true}, the output buffer will be flushed whenever a<a name="line.142"></a>
<span class="sourceLineNo">143</span>         *            byte array is written, one of the println methods is invoked,<a name="line.143"></a>
<span class="sourceLineNo">144</span>         *            or a newline character or byte ('\n') is written<a name="line.144"></a>
<span class="sourceLineNo">145</span>         * @throws IOException<a name="line.145"></a>
<span class="sourceLineNo">146</span>         *             if an I/O error occurs<a name="line.146"></a>
<span class="sourceLineNo">147</span>         */<a name="line.147"></a>
<span class="sourceLineNo">148</span>        public static void setErr(final File path, final Charset charset, final boolean autoFlush) throws IOException {<a name="line.148"></a>
<span class="sourceLineNo">149</span>                checkNotNull(path);<a name="line.149"></a>
<span class="sourceLineNo">150</span>                checkNotNull(charset);<a name="line.150"></a>
<span class="sourceLineNo">151</span>                final PrintStream ps = MoreFiles.newPrintStream(path, charset, false, true);<a name="line.151"></a>
<span class="sourceLineNo">152</span>                System.setErr(ps);<a name="line.152"></a>
<span class="sourceLineNo">153</span>        }<a name="line.153"></a>
<span class="sourceLineNo">154</span><a name="line.154"></a>
<span class="sourceLineNo">155</span>}<a name="line.155"></a>




























































</pre>
</div>
</body>
</html>
